Daring fashion choice requires both confidence and chestiness in large measures.

When learning Japanese, it took me a long time to get used to using the word ryukku, even though it comes from the English word “rucksack.” That’s because I grew up in the U.S., where no one ever says “rucksack,” and everyone instead calls a pack you carry on your back a “backpack.”

But maybe others who’re struggling with that same part of their Japanese studies will have that mental barrier blown away by Yui Okada (@dotetinyui on Twitter), who’s recently shared a series of photos on Twitter that have appreciative observers associating the rucksack not with the back, but with a popular part of frontal female anatomy.

▼ “Carrying my rucksack with my breasts,” tweets Okada.

https://twitter.com/dotetinyui/status/995194350714765312

In her profile, Okada describes herself as someone who “makes adult-oriented cosplay-style DVDs.” In other words, she dresses up in skimpy or fetish-fueling outfits, such as the frilly schoolgirl-like ensemble above.

While Okada’s chest is prodigious and protruding enough to fit the rucksack’s shoulder straps around, some imagined it must be a painful setup. However, Okada herself tweeted multiple times that it didn’t hurt at all, though she also says she wore the straps like this as a one-time joke, so it’s unsure if she’d still be comfortable after repeated or extended boobpack sessions.

For those who couldn’t quite understand where exactly everything was in relation to each other, She helpfully tweeted a shirtless follow-up demonstration as well.

https://twitter.com/dotetinyui/status/995444434861871104

Okada’s boobpack was met with widespread approval online, with multiple commenters saying it surpassed even the beloved “breast slash” look, as well as:

“This is an incredible idea.”
“Such an overwhelming presence.”
“I wonder if this will start a trend?”
“A whole new function for breasts.”
“The frills are cute.”

Despite the rather chaste reaction from the last commenter, Okada is unabashedly conscious that its her sexiness that draws in most fans. So while other cosplayers put painstaking effort into makeup and hairstyling…

https://twitter.com/dotetinyui/status/989274659337064449

…it’s not unusual for Okada to elect not to show her face in her tweets, instead relying on her creativity, fashion sense, and above-mentioned “overwhelming presence” to keep fans coming back for more.

Source: Twitter/@dotetinyui via Hachima Kiko

Follow Casey on Twitter, where he assumes this wouldn’t work with the 15-pound backpack he had to carry in high school.